30840075 has 96 divisors (see below), whose sum is σ = 66424320. Its totient is φ = 13737600.

The previous prime is 30840053. The next prime is 30840101. The reversal of 30840075 is 57004803.

It is not a de Polignac number, because 30840075 - 2¹⁸ = 30577931 is a prime.

It is a super-2 number, since 2×30840075² = 1902220452011250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 288172 + ... + 288278.

It is an arithmetic number, because the mean of its divisors is an integer number (691920).

Almost surely, 2^30840075 is an apocalyptic number.

30840075 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30840075 is an abundant number, since it is smaller than the sum of its proper divisors (35584245).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30840075 is a wasteful number, since it uses less digits than its factorization.

30840075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 30840075 is about 5553.3841034094. The cubic root of 30840075 is about 313.5969343800.

Adding to 30840075 its reverse (57004803), we get a palindrome (87844878).

The spelling of 30840075 in words is "thirty million, eight hundred forty thousand, seventy-five".